package club.xshiwu.springcloud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.concurrent.TimeUnit;

@Service
public class PaymentService {
    public String paymentInfo_OK(Integer id){
        return "线程池：" + Thread.currentThread().getName() + "  paymentInfo_OK,id：" + id + "\t" + "O(∩_∩)O哈哈~";
    }

    @HystrixCommand(fallbackMethod = "paymentInfo_TimeOutHandler", commandProperties = {
            @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds", value = "3000")
    })
    public String paymentInfo_TimeOut(Integer id){
        int timeNumer = 4;
        try {
            TimeUnit.SECONDS.sleep(timeNumer);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        return "线程池：" + Thread.currentThread().getName() + "  paymentInfo_TimeOut,id：" + id
                + "\t" + "O(∩_∩)O哈哈~" + "耗时：" + timeNumer + "秒";
    }

    public String paymentInfo_TimeOutHandler(Integer id){
        return "线程池：" + Thread.currentThread().getName() + "  paymentInfo_TimeOutHandler,id：" + id + "\t" + "挂了o(╥﹏╥)o";
    }

    // 4.29新增熔断demo，十秒后达到半开状态，然后测试请求，成功，关闭，circuitBreaker 否则还是开启
    @HystrixCommand(fallbackMethod="paymentCircuitBreakerFallback", commandProperties={
            @HystrixProperty(name = "circuitBreaker.enabled" ,value = "true"),//是否开启断路器
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold",value = "10"),// 请求次数超过峰值，熔断器将会关闭
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds",value = "10000"),//时间窗口期
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage",value = "60")//失败率达到多少后跳闸
    })
    public String paymentCircuitBreaker(@PathVariable("id") Integer id){
        if (id<0){
            throw new RuntimeException();
        }
        String serialNumber = IdUtil.simpleUUID();
        return Thread.currentThread().getName()+"\t "+"调用成功,流水号: "+serialNumber;
    }
    public String paymentCircuitBreakerFallback(@PathVariable("id") Integer id){
        return "id不能为负数,请稍后再试~ id: "+ id;
    }
}
